https://epsaddlery.com/product/1920-tom-threepersons-2-to-7-12-barrels/
There are many good choices from as many manufacturers. The Tom Threepersons from El Paso Sadlery is a great choice, and serves me well for my short barreled SA revolvers. They can be had, finished from mild to wild.
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Here's another, by Zack Davis, built on a thumb-break scabbard pattern. DeSantis makes one similar. Rides very high and tight.